Hello. I am using DB4S. In table1 one I have rows like this: ABC123 12345 ABC123 67890 ABC123 98765 ABC123 99999 DEF123 12345 DEF123 55555 XYZ123 01234 etc I want to retain the data in the table rather than deleting it, but after processing it I want to hide it from view based on the value in col1. So, I want to add ABC123 to table2 and by doing this it hides all ABC123 rows in table1 'browse data' view. I can't use either column as primary key as both columns have instances of the same value. Can anyone help me with the code for table1 "if value from table1 col1 found in table2 col1, don't show those rows in table1" (basically!) ? Thank you. Rgds. Rob